Polishing-machine.



H0 MODEL.

. PATENTBD APR. 19, 190$. D. MOGANGE.

POLISHING MACHINE.

nnmnxou FILED 233.1, 1904.

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No. 757,763. PATENTED APR. 19, 1904.-

' D. MUGANCE.

POLISHING MACHINE.

APPLICATION FILED IBBJ, 1904.

K0 MODEL.

2 SHEETS-SHEET 2.

Jlll'orgeys Patented April 19, .190

PATENT Prion.

DAVID MGCANOE, OF LOCKPORT, NEl V YORK.

POLISHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 757,763, dated April19, 1904:.

Application filed February 1, 1904. Serial No. 191,563- (llo model.)

To all whom it may concern:

Be it known that I, DAVID MoCANcn, a citizen of the United States,residing at Lockport, in the county of Niagara and State of New York,have invented a new and useful Polishing-Machine, of which the followingis a specification.

This invention relates to polishing-machines, and more especially tomachines designed primarily for use in polishing long articles, such asstrips of metal, long pieces of tubing, and the like.

V The principal object of the invention is to provide a simple,.thoroughly-eflicient, and easily-operated machine by means of whichlong articles may be rapidly and uniformly polished and in which thepressure of the polishing member upon the article to be polished may bereadily controlled.

A further object of the invention is to provide a machine of thecharacter specified with improved means for supporting the framecarrying the polishing member in suitable relation to the carriage uponwhich the article to be polished is secured.

In attaining the objects above mentioned, and others which will appearas the invention is more fully disclosed, I make use of a novelconstruction, combination, and arrangement of parts ofapolishing-machine, as hereinafter fully described and claimed, andillustrated in a preferred form of embodiment in the accompanyingdrawings, it being understood that various changes in the minorstructural details may be made Without departing from the spirit of theinvention or sacrificing the advantages thereof. r

In the drawings; Figure 1 is a view in side elevation of the completemachine, showing a strip of sheet metal clamped upon the carriage inposition to be polished. Fig. 2 is a sectional view on the line 2 2 ofFig. 1.

Referring to the drawings, in which corresponding parts are designatedby similar charactors of reference throughout, 1 designates the maindriving-shaft of the machine, which is suitably journaled inbearing-blocks 2 2, mounted upon any suitable standards, as the posts 33 3. The shaft 1 has pivotally mounted thereon a frame 4:, preferablycomposed of two slightly-convergent tubular members 5 and a transversebrace member 6, arranged At the free end of the frame 4 a shaft 11 isjournaled in bearings provided therefor, and this-shaft bears thepolishing element, which consists in the present instance of a wheel 12of any suitable character. The wheel 12 is mounted on one end of theshaft, as shown, and a pulley 13 is rigidly secured upon the shaftbetween the ends of the frame members 5 to receive the power transmittedby the belt 8. Lubricators 14E of any ordinary or preferred constructionare provided in connection with the bearings for the shaft 11 and theframe, and the members mounted therein are supported by means of aspring 15, suspended from an overhead support and connected at its lowerend with a turnbuckle 16, which is in turn connected with a bar 17,bolted to a yoke 18, which straddles the belt 8 and is attached to theframe 4. The bar 17 is pivotally connected with a bar 19 above it, whoselower endis forked, as shown, and whose upper end is pivotally attachedto an overhead support. The bar 17 is provided near its connection withthe bar 19 with a loop 20, which serves as a handhold for-the operatorin controlling the action of the polishing element.

The polishing-wheel is disposed above the line of travelof the articleto be polished, in the present instance a strip of sheet metal,(indicated at S.) The article to be polished is mounted upon areciprocating carriage 21, which is arranged for horizontal travel alongsuitable ways. In the form of the invention illustrated the Ways arerods or tubes 22, which are mounted in suitable standards 23 and exitend through double guides 24:, attached to the under surface of thecarriage. Upon the upper surface of the carriage clamping devlces of acharacter suitable for use with the article to be polished are provided,and when the machine is to be used in polishing strips of sheet metalthe clamping devices preferably employed consist of strips 25, extendinglongitudinally of the carriage and secured in position by means of bolts26.

Reciprocatory movement is imparted to the carriage by means of apinion'27,which meshes with a rack 28, formed on the under side of thecarriage. The pinion 27 is mounted upon a shaft 29, journaled inbearings 30, provided upon a support 31, which projects laterally fromthe supporting structure of the carriage and has the outer end thereofresting upon a standard 32, the inner end being supported by alongitudinally-arranged member 34, Which is attached at its ends to thestandards 23. The shaft 29 is provided with pulleys 35 and 36, overwhich travel direct and crossed belts 37 and 38, respectively. Thesebelts are driven from a counter-shaft 39, which is in turn driven bybelting from the main shaft 1. By the belts 37 and 38 motion may beimparted to the shaft 29 in either direction, and such motion will betransmitted through back gearing to the pinion 27, which is loose uponthe shaft 29 and is rigidly connected with one of the elements of theback gearing.

By alternately imparting movement to the pulleys 37 and38 the carriageis given a reciprocatory movement along the ways provided therefor, andthe upper surface of the strip of metal or other article secured uponthe carriage will be subjected to thorough and effective action of thepolishing element. In order to support the ends of the article carriedby the carriage, I provide at the ends of the carriage-supportingstructure brackets 40, in which horizontally-arranged rollers 41 arejournaled. These rollers increase the length of the support for thearticle to be polished, so preventing bending thereof and keeping it outof contact with the upper ends of the standards upon which thecarriageways are mounted.

The operation of the machine will be readily understood from thedescription of the construction of the machine and from the accompanyingdrawings. The article to be polished is clamped upon the carriage by anysuitable clamping devices. Movement is imparted to p the carriage bymeans of the devices provided for that purpose, and movement issimultaneously imparted to the polishing-wheel from the main shaft 1.The operator will then grasp the loop 20, and by applying force theretohe will bring the toggle-levers more nearly into alinement, sodepressing the polishing-wheel and bringing it into contact with thearticle to be polished. The pressure of the polishing-wheel upon thearticle to be polished will be controlled by the force agplied to theloop 20, and as the members of the toggle-joint are brought more nearlyinto alinement the pressure of the polishing-Wheel upon. the article tobe polished will be increased, as will be readily seen. When it isdesired to exert a maximum pressure upon the article to be polished, thetoggle members will be forced into alinement and will be held in thatposition by a bolt or pin which passes through the fork at the end ofthe bar 19 and limits the pivotal movement of the bar 17 in the fork.

Having thus described the construction and operation of my invention,what I claim as new, and desire to secure by Letters Patent, 1s

1. In a polishing-machine, a pivoted supporting-frame, a polishingelement carried by said frame, toggle members for forcing said frameinto operative position, and a spring engaging one of said togglemembers and holding said members normally disalined.

2. In a polishing-machine, a pivoted supporting-frame, a polishingelement carried by said frame, a reciprocating work-carrier disposedbeneath said polishing element, a pair of toggle-links arranged abovesaid pivoted frame and having the lower member thereof 'pivotallyconnected with said frame, yielding means for holding said framenormally in inoperative position, and means disposed between saidyielding means and said toggle members for adjusting the position of thesupporting-frame relative to said yielding means.

3. In a polishing-machine, a pivoted supporting-frame, a polishingelement carried by said frame, yielding means for holding said framenormally in inoperative position, toggle members-for forcing said frameinto operative position against the action of said yielding means, andmeans for limiting the pivotal movement of said toggle members. i. In apolishing-machine, the combination of a pivoted supporting-frame, arotary polishing element carried thereby, a carriage arranged forreciprocatory movement beneath said polishing element and in the planeof rotation thereof, a rack beneath. said carriage, a pinion engagingsaid rack, and means at one side of said carriage for imparting movementto said rack.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

DAVID MOOANCE.

Witnesses:

ABNER T. HOPKINS, H. W. HOBART.

IOC

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